Encryption-Java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;
import java.lang.Math;

class Result {

    

    public static String encryption(String s) {
    
    String st = s.replaceAll("\\s", "");
    
    int l=s.length();
    double r=Math.floor(Math.sqrt(l));
    double c=Math.ceil(Math.sqrt(l));
    
    int len=(int) (r>c?r:c);
    String result = "";
    
    for(int i=0;i<len;i++) {
                for(int j=i;j<l;j += (int)c) {
                    char ch=s.charAt(j);
                    result+=ch;
                }
                result+=" ";
            }
    return result;
    }

}

public class Solution {
    public static void main(String[] args) throws IOException {
       
        Scanner sc = new Scanner(System.in);
        String str = new String();
        str = sc.nextLine();
        
        String result = Result.encryption(str);
        System.out.print(result);
    }
}